Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f47f8bb6143080d…

MALICIOUS

PDF

45.0 KB Created: 2020-04-02 09:07:00 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 39543b84aa8d28a6f922f2e4b61f8f52 SHA-1: 6ae83e3525d4b8a624eaa5a189f2c1060e96db3f SHA-256: 2f47f8bb6143080d79bd147a1e4ce9e93f961c08eee62ff2d2c049a0ca6f5cd4
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains a large number of external links, many of which are numerically or generically named, suggesting a link farm or SEO spam tactic. The document body, though partially corrupted, contains text related to 'rent increase 2020' and includes a specific URL, 'http://youmakeitibreakit.com/uploads/1/3/0/4/130476657/130476657.html#dhcr+rent+increase+2020', which likely serves as a lure. The presence of numerous PDF links hosted on various domains, such as 'mountainviewmealprep.com', further supports the attack pattern of directing users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://youmakeitibreakit.com/uploads/1/3/0/4/130476657/130476657.html#dhcr+rent+increase+2020
    • http://mountainviewmealprep.com/uploads/1/3/1/3/131381544/vomasevevaboviv.pdf
    • http://homehealthretreat.com/uploads/1/3/0/9/130969141/ae90041b57fa24.pdf
    • http://normanbrickandmasonry.com/uploads/1/3/1/4/131438142/19e0b516b160b.pdf
    • http://spacemeetswork.com/uploads/1/3/0/5/130588444/1804040.pdf
    • http://lapisandlavender.com/uploads/1/3/0/4/130436017/lepogalusawi.pdf
    • http://mygoatjob.com/uploads/1/3/1/4/131408397/tagaweguvefuti-sexakubilozife-mupegaf-ferinogepetadi.pdf
    • http://robertdickstudionyc.com/uploads/1/3/0/4/130476074/nafuwixeloji.pdf
    • http://randhan.info/uploads/1/3/0/4/130477090/5875906.pdf
    • http://sacredwithsimone.com/uploads/1/3/0/7/130739646/jegetoxoj.pdf
    • http://avretoday.com/uploads/1/3/0/6/130605248/pefebaf.pdf
    • http://art-at-company.com/uploads/1/3/0/9/130969404/gakiwemivab.pdf
    • http://kikolett.com/uploads/1/3/1/0/131071252/7885492.pdf
    • http://riverridgeagency.com/uploads/1/3/0/7/130740442/c9dfa4e.pdf
    • http://vitalsolutionsllc.org/uploads/1/3/0/7/130775904/d45e83f5bd5ec.pdf
    • http://antheadacymediationservices.com/uploads/1/3/0/5/130548070/1265775.pdf
    • http://evanryanstern.com/uploads/1/3/0/4/130476878/sugatemez.pdf
    • http://livelikeme.info/uploads/1/3/1/3/131382797/kuxosuvugu-lemezo.pdf
    • http://100limites.org/uploads/1/3/0/9/130969341/mezitemifemixo.pdf
    • http://avitrainingsolutions.com/uploads/1/3/1/3/131379496/46e7341d9d150ce.pdf
    • http://365itech.com/uploads/1/3/0/6/130639175/wotowaporas.pdf
    • http://lateatrista.com/uploads/1/3/0/6/130620840/3ad3fe76383.pdf
    • http://ridingforacause.org/uploads/1/3/0/6/130621555/bufedovokuxik.pdf
    • http://fqscrystals.com/uploads/1/3/0/8/130813526/8f9da260ce9829.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000086bc.bin
d2bad7bdbfee7a5dcda80e2718f8afb4c375a4b569cecadb728c2f3887689828		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86BC 8372 bytes

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